/Engine/Source/Editor/UnrealEd/Public/WorkflowOrientedApp/WorkflowTabFactory.h
Callback function for spawning the tab
virtual [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > OnSpawnTab ( const [FSpawnTabArgs](API\Runtime\Slate\Framework\Docking\FSpawnTabArgs) & SpawnArgs, [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [FTabManager](API\Runtime\Slate\Framework\Docking\FTabManager) > WeakTabManager ) const